Abstract: An Fe--Ni alloy cold-rolled sheet excellent in cleanliness and etching pierceability prepared as specified in the claims, which consists essentially of: 30 to 45 wt. % nickel, 0.1 to 1 wt. % manganese, 0.003 to 0.03 wt. % aluminum and the balance being iron and incidental impurities comprising up to 0.4 wt. % silicon, up to 0.1 wt. % chromium, up to 0.005 wt. % carbon, up to 0.005 wt. % nitrogen, up to 0.005 wt. % sulfur, up to 0.010 wt. % phosphorus, up to 0.002 wt. % oxygen, and up to 0.002 wt. % as converted into oxygen for non-metallic inclusions. The non-metallic inclusions contain at least CaO, Al.sub.2 O.sub.3 and MgO, and the composition thereof is in a region of a melting point of at least 1,600.degree. C., which region is defined by the liquidus curve of 1,600.degree. C. in the CaO--Al.sub.2 O.sub.3 --MgO ternary phase diagram. The non-metallic inclusions have a particle size of up to 6 .mu.m.

Abstract: A stainless steel sheet essentially consisting of: 0.01 to 0.2 wt. % C, 0.1 to 2 wt. % Si, 0.1 to 2 wt. % Mn, 4 to 11 wt. % Ni, 13 to 20 wt. % Cr, 0.01 to 0.2 wt. % N, 0.0005 to 0.0025 wt. % sol.Al, 0.002 to 0.01 wt. % O, 0.009 wt. % or less S, and the balance being Fe and inevitable impurities; the sheet containing 40 to 90% martensite; and the steel sheet having a 1400 N/mm.sup.2 or more tensile stress when a tensile strain is 1.0%. The invention also provides a method for producing a stainless steel sheet comprising the steps of: applying to the steel sheet a process of first cold rolling (CR.sub.1)--first intermediate annealing--second cold rolling (CR.sub.2)--second intermediate annealing--third cold rolling (CR.sub.3)--the final annealing--fourth cold rolling (CR.sub.4)--low temperature heat treatment; the first-, second- and third cold reduction ratio being 30% to 60%; the annealing temperatures in the first-, second- and final annealing being in the range of 950.degree. C. to 1100.degree. C.

Abstract: The metallic sheet for shadow mask comprises a Fe-Ni alloy sheet having mainly of Fe and Ni; degrees of planes on a surface of the alloy sheet, the degree of {331} plane being 14% or less, the degree of {210} plane 10% or less and the degree of {211} plane 10% or less; and a ratio of degrees of planes which is {210}/[{331}+{211}] being 0.2 to 1.Another thin metallic sheet for shadow mask comprises a Fe-Ni alloy sheet having mainly of Fe and Ni; degrees of planes on a surface of the alloy sheet, that of {111} plane being 5% or less, that of {100} plane 50 to 93%, that of {110} 24% or less, that of {311} plane 1 to 10%, that of {331} 1 to 14%, that of {210} plane 1 to 10% and that of {211} plane 1 to 10%; a ratio of degrees of planes which is [{100}+{311}+{210}]/[{110}+{111}+{331}+{211}] being 0.8 to 20.

Abstract: A driving system for an induction motor which is capable of properly controlling the speed of an induction motor over its high-speed revolution range and also features an excellent responsiveness to a speed command. In this system, a slip pulse (SSP) and a phase shifting pulse (FSP) are calculated by a slip pulse generator circuit (20) and a phase shifting pulse generator circuit (21) in accordance with slip pulse data (SB) and phase shifting pulse data (FB) which are calculated by a processor (1) in accordance with the speed command and an output of a speed detector. A counter (24) issues the first changeover signal (CS1) each time it receives a specified number of pulses from a pulse overlapping circuit (23). The first changeover signal corresponds to a feedback pulse calculated in accordance with the output of the speed detector and also to the slip pulse and the phase shifting pulse added.

Abstract: An Fe-Ni alloy sheet for a shadow mask, which consists essentially of:nickel: from 34 to 38 wt. %,silicon: from 0.01 to 0.15 wt. %,manganese: from 0.01 to 1.00 wt. %, andthe balance being iron and incidental impurities.The surface portion of the alloy sheet has a silicon (Si) segregation rate, as expressed by the following formula, of up to 10%: ##EQU1## and a center-line mean roughness (Ra) of the alloy sheet satisfies the following formula:0.3 .mu.m<.ltoreq.Ra .ltoreq.0.7 .mu.m.The above-mentioned Fe-Ni alloy sheet is manufactured by preparing an Fe-Ni alloy sheet having the chemical composition and the silicon segregation rate as described above, and imparting a center-line mean roughness (Ra) which satisfies the above-mentioned formula onto the both surfaces of the alloy sheet by means of a pair of dull rolls during the final rolling of the alloy sheet for said preparation.

Abstract: An Fe-Ni alloy sheet excellent in hot workability, adhesivity to a plating layer and solderability, which consists essentially of:______________________________________ nickel (Ni): from over 38 to 52 wt. %, silicon (Si): from 0.01 to 0.15 wt. %, calcium (Ca): from 0.0002 to 0.0020 wt. %, magnesium (Mg): from 0.0003 to 0.0020 wt. %, where, Ca + 1/2Mg: from 0.0005 to 0.0025 wt. %, ______________________________________and the balance being iron and incidental impurities,where, the contents of carbon (C), nitrogen (N), sulfur (S), oxygen (O), phosphorus (P) and aluminum (Al) as the incidental impurities being respectively:up to 0.0050 wt. % for carbon,up to 0.0020 wt. % for nitrogen,up to 0.0020 wt. % for sulfur,up to 0.0040 wt. % for oxygen,up to 0.0040 wt. % for phosphorus, andunder 0.010 wt.% for aluminum,where, 1/10 C+1/10 N+S+1/5 O +1/2 P.ltoreq.0.0045 wt.

Abstract: An Fe-Ni alloy sheet for a shadow mask excellent in etching pierceability, preventing sticking during annealing, and inhibiting production of gases, which consists essentially of:______________________________________ nickel (Ni) from 34 to 38 wt. %, silicon (Si) from 0.01 to 0.09 wt. %, aluminum (Al) from 0.002 to 0.020 wt. %, calcium (Ca) from 0.0002 to 0.0020 wt. %, magnesium (Mg) from 0.0003 to 0.0020 wt. %, where, Ca + 1/2 Mg from 0.0005 to 0.0025 wt. %, ______________________________________andthe balance being iron and incidental impurities,where, the contents of carbon (C), nitrogen (N), sulfur (S), oxygen (O) and phosphorus (P) as the incidental impurities being respectively:up to 0.0050 wt.% for carbon,up to 0.0020 wt.% for nitrogen,up to 0.0020 wt.% for sulfur,up to 0.0040 wt.% for oxygen, andup to 0.0040 wt.% for phosphorus,where, 1/10 C+1/10 N+S+1/5 O+1/2P:up to 0.0045 wt.%, andCa+1/2 Mg.gtoreq.

Abstract: A method for manufacturing an Fe-Ni alloy cold-rolled sheet excellent in cleanliness and etching pierceability, comprising: preparing an Fe-Ni molten alloy, containing 30 to 45 wt. % nickel, and subjected to dephosphorization and decarburization; adding aluminum and flux to the Fe-Ni molten alloy in a ladle made of an MgO-CaO refractory containing 20 to 45 wt. %; strongly stirring the Fe-Ni molten alloy which contains the added aluminum and flux in the ladle to produce a CaO-Al.sub.2 O.sub.3 -MgO slag so as to react the Fe-Ni molten alloy with the CaO-Al.sub.2 O.sub.3 -MgO slag to deoxidize the Fe-Ni molten alloy while controlling a value of activity of SiO.sub.2 from 0.001 to 0.005 and a value of activity of Al.sub.2 O.sub.3 from 0.1 to 0.3 in the CaO-Al.sub.2 O.sub.3 -MgO slag, and the CaO-Al.sub.2 O.sub.3 -MgO slag having the following chemical composition: CaO and Al.sub.2 O.sub.3 : at least 57 wt. %, wherein the ratio of CaO/(CaO+Al.sub.2 O.sub.3) being at least 0.45, MgO: up to 25 wt. %, SiO.sub.

Abstract: An Fe-Ni alloy sheet for a shadow mask, which consists essentially of:nickel: from 34 to 38 wt. %,silicon: from 0.01 to 0.15 wt. %,manganese: from 0.01 to 1.00 wt. %, andthe balance being iron and incidental impurities;the surface portion of the alloy sheet having a silicon (si) segregation rate, as expressed by the following formula, of up to 10%: ##EQU1## and the alloy sheet having a surface roughness which satisfies all the following formulae (1) to (3):0.3 .mu.m.ltoreq.Ra.ltoreq.0.8 .mu.m (1)where, Ra: center-line mean roughness;3.ltoreq.Rkr.ltoreq.

Abstract: In the needle thread wiper of sewing machine according to the invention, the hook formed at the front end of a leaf spring is projected in or out from the front end of the guide element formed nearly in a J-form, and when inserting this hook into the front end of the guide element, the needle threads extending between the needle and cloth is hooked on the front end of this hook so as to be placed into the front end of the guide element together with the hook. At the front end of the guide element, at the positions corresponding to the both flat surfaces of the leaf spring, notches are formed so as to extend from the front end to the base part side. The needle thread introduced into the front end of the guide element is guided by the notches and placed deeply into the guide element. The needle thread is held merely in a state of being hooked between the hook and the guide element, and so that is easily unhooked, almost without any resistance, when the needle is lowered upon start of next sewing step.

Abstract: A method for manufacturing an Ni-Fe alloy sheet having an excellent DC magnetic property and an excellent AC magnetic property, which comprises the steps of:hot-working a material consisting essentially of:______________________________________ nickel from 76 to 81 wt. %, molybdenum from 3 to 5 wt. %, copper from 1.5 to 3.0 wt. %, boron from 0.0015 to 0.0050 wt. %, ______________________________________and the balance being iron and incidental impurities, to prepare an Ni-Fe alloy sheet; then subjecting the alloy sheet to a first cold-rolling at a reduction ratio of from 50 to 98%; then subjecting the alloy sheet to a first annealing in a temperature of from 780.degree. to 950.degree. C.; then subjecting the alloy sheet to a second cold-rolling at a reduction ratio of from 75 to 98%; and then subjecting the alloy sheet to a second annealing in a temperature of from 950.degree. to 1,200.degree. C.; thereby imparting an excellent DC magnetic property and an excellent AC magnetic property to the alloy sheet.

Abstract: A ferromagnetic Ni-Fe alloy consisting essentially of:______________________________________ nickel from 75 to 82 wt. %, molybdenum from 2 to 6 wt. %, boron from 0.001 to 0.005 wt. %, calcium within the range satisfying any one of the following formulae in a weight ratio to sulfur as an incidental impurity, depending upon an oxygen content as an incidental impurity: 1.5 .ltoreq. Ca/S .ltoreq. 3.5, or 1.15 .ltoreq. Ca/S .ltoreq. 3.50, ______________________________________and the balance being iron and incidental impurities. Said alloy may further additionally contain from 1 to 5 wt. % copper and/or from 0.1 to 0.4 wt. % manganese. An alloy article such as a slab or a strip having an excellent surface quality of said alloy is manufactured by heating a material having the above-mentioned chemical composition to a temperature of from 1,100.degree. to 1,250.degree. C., and then hot-working the thus heated material at a finishing temperature of at least 800.degree. C.

Abstract: An ion exchange membrane reinforced by a woven reinforcing fabric is provided in which the difference between the thickness of the membrane at the crossover points where the warp and weft strands of the fabric cross each other and that at the window portions defined by the crossed warp and weft strands is not greater than 35 .mu.m. This membrane may be produced for example, by heating an assembly comprising at least two fluorinated polymer films each having pendant sulfonyl groups and/or carboxyl groups in a melt-fabricable form, and a woven reinforcing fabric sandwiched between the polymer films, and a support sheet laminated to the outermost polymer film, while applying a negative pressure to one side of the assembly that is remote from the support film, followed by converting the sulfonyl and/or carboxyl groups of the polymer films to sulfonate and/or carboxylate groups.

Abstract: In an apparatus for determining the reduction ratio of a rolled material by measuring the moving speed of a magnetic mark formed on a strip on the inlet and outlet sides of a rolling mill, a rising of a signal of the logical product of a detection signal on the inlet side and a pulse of a gate which is opened by a magnetic mark detection signal on the outlet side and is closed after the lapse of an optimum time is adopted as the timing for detection of the magnetic mark on the inlet side, and the comparison levels of the detectors are automatically changed according to the stored magnitude of the magnetic mark, whereby a worsening of the S/N ratio of the magnetic mark signal on the inlet side or an erroneous detection is reduced.

Abstract: A process for the production of highly concentrated phosphoric acid, comprises improvements in digesting phosphate rock with a mixed acid consisting essentially of sulfuric acid and phosphoric acid to obtain a slurry comprising phosphoric acid and hemihydrate (CaSO.sub.4.1/2H.sub.2 O), then filtering the slurry, taking out highly concentrated phosphoric acid as product acid and subsequently hydrating the hemihydrate to obtain gypsum (dihydrate: CaSO.sub.4.2H.sub.2 O).

Abstract: A programmable controller which executes instructions stored in a user program memory to thereby effect predetermined system control.

Abstract: The surface of an aluminum conductor is roughened, for example, by blasting. A hydrophilic film such as a boehmite film, an anodic oxide film and a chemical conversion film is formed on the roughened surface. A protective film made of a wetting agent or a hydrophilic resin is formed on the hydrophilic film. The conductor may comprise a compressed aluminum conductor.

Abstract: This programmable controller includes: a programmable console with a keyboard; a user program memory; a retrieval means for retrieving the contents of the user program memory in response to the operation of a certain key provided on the keyboard; a first command extracting means for extracting a series of user commands relating to whether execution conditions for an interlock command are met or not when the interlock command is detected by the action of the retrieval means; a first memory means for storing the interlock command and a series of user commands; a second command extracting means for, during the time between the detection of the interlock command and the detection of a corresponding interlock clear command by the action of the retrieval means, extracting all the specific user commands from the group of user commands interposed between the interlock command and the interlock clear command; a second memory means for storing the specific user commands with their addresses; the interlock command and t

Abstract: A laminate composed of a fire-retardant resin composition comprising a polyolefin resin and hydrate of calcium silicate containing 30% by weight or more of platy crystals and/or needle shaped crystals with an aspect ratio of 3 or higher in sheet form and having metal sheet on both sides thereof.

Abstract: An end assembly for connection to a ground wire incorporating an optical fiber cable therein includes a tubular compression sleeve of a plastically deformable material, a protective sleeve received in the compression sleeve and having a bulged portion intermediate opposite ends thereof, and a filler member interposed between the compression sleeve and the protective sleeve. The ground wire comprises a protective tube, an optical fiber cable housed in the protective tube, and a plurality of ground wire elements helically wound around the protective tube. The wire elements are unwound from the protective tube at the end of the ground wire to provide an exposed end portion thereof. The protective sleeve is adapted to be fitted on the exposed end portion of the protective tube with the unwound end portions of the wire elements interposed between the protective sleeve and the filler member.